just to add to the discussion:
I will be 56 years old in 4 weeks, and I've been a crossfitter for 4 years and never felt better in my life.
Athlete: Bobby Worley | CrossFit Games
oh, and I'm also building a Hurricane Cobra
Hurricane HM-2008 build in progress...
I love it and I need it I bleed it ~ Yeah it's a wild hurricane ~ Alright hold on tight I'm a highway star